Machine for mixing concrete.



I No. 858,017.' PAIENIED JUNE25, 1907.

I C. M. PENCE. MACHINE ECE MIXING CONCRETE.

APPLICATION FILED JAN.18V,1907.

I 2 SHEETS-SHBBT l.

PATE'N'I'ED JUNE 25, 1907.

G. M. PENCE. MACHINE EUR MIXING CONCRETE.

APPLICATION FILED J N. 18, l O A A 9 7 2 SHEETS-SHEET 2.

@ ige/IZ Felice, y

[VfL-Wwe encuen n. runen, or Toren, INDLANA.

MACHINE Fos 'wnxiNG CONCRETE.

Specification of Letters Patent.

Patented June 25, ,1907.

pplicatlnu tiled January 18,1907. Serial No. 352,994.

-To (all lull/m11, if, 111.114/ con/ecru:

Be it known that l', (leonor: M. Praxen, a citizen olf the lfnited States, residing at Topeka, in the county ot Lagrange and State of indiana, have invented a new and useful Machine for Mixing Concrete, .ol which the lollowing is a specilication.

This invention relates to machines tor mixing concrete and its ohject is to provide a machine, ol' this character which is ot' coniparatively simple construction and which will combine cement and sand in proper' proportions and thoroughly mix them, subseduentlbr moistening said mixture.

With these and other objects in View the invention consists ol" certain novel features of construction and combinations ot parts which will he hereinafter more 'fully deserihed and pointed out in the claims.

ln the accompanying drawings is shown the preferred form ot the invention.

in said drawings: Figure 1 is a vertical longitudinal section through the machine; Fig. 2 is an end elevation t-hereol; and Fig, 3 is a vertical transverse section.

Referring to the ligures by character ot reference, l, 1 are hase sills on which are supported uprights 'l and il. Aarranged on the uprights 2 is a hopper 4 opening into a trough 5 provided with an outlet (i at one end. vA shaft 7 extends longitudinally through this trough and has a worm S thereou. adapted, when the shatt is rotated in one direction, to Feed material within the trough toward the outlet G.' Another shalt t) extends through the hopper 4 near its outlet l() and arranged on this shalt `uid within the hopper are series ot agitating arms ll preterahly curved troni end to end and o't dill'erent lengths. A sprocket i2 is secured on the shaft 1l and receives motion through a chain 13 troni a sprocket l-ft on shaft 7. Another sprocket 15 is secured to shalt 11.

Arranged upon the uprights 3 is a hopper 16 the bottom `ol" which opens into a trough t7 having an outlet 18 at one end. A shat't 1i) extends longitudinally \,vithin the trough and carries a worm 2t) which is adapted, when the sha'tt 1Q is rotated in one direction, to 'feed material within the trough toward the outlet 18. A sprocket 2l is secured on the shaft 19.

Mounted on suitable supports 22 is a drive shaft 23 l'iaving a sprocket 2d adapted to transmit motion through a chain 25 to the sprocket 21. Another sprocket lo is secured i l i l to said shaft and comprises a chain 27 which extends over the sprocket l5. A third sprocket 2S is secured to shaft 23 and drives a chain 29 which engages a sprocketv() on a shaft 3l extending through a iniiing trough 32. 'lhis trough extends below the troughs 5 and 17 and the shaft 3,1 carries aworm adapted when rotated to feed the material within the trough toward an outlet-3st a one end ot the trough. Arranged along the shaft 3l are paddles 35 disposed reversely to the worm so thatwhen the worm is rotated these paddles will result in the thorough mir` ind of the material within the trough be'ore u is discharged by the worm through thc out et. A main hopper 36 is disposed above the trough 32 and the outlets 6 and ,1S of the up,n per troughs open into it. A tank 37 is supported above the trough 32 near its outlet and` has one or more outlet pipes 3S connected thereto and adapted to spray Water upon the mixture as '.t passes thereunder.

When shaft L3 is rotated all of the other shafts of the apparatus Will at the same time he rotated in the same direction therebyT causing all ot' the worms to feed material in the paths thereof toward the outlets and their respective troughs. A supply of sand is placed within the hopper 4 and cement within the hopper 16, and the Worms S and 2t) are so proportioned hoth as to their pitch and speed ot rotation that the proper proportion ot sand and cement will he con stantly discharged through the outlets 5 and 1S and into hopper 36. the, material is discharged into trough 32 where it. is l'ed lto the discharge 34 hy-worin 253. .Paddles thoroughly mix the material and just prior to the discharge et the nier terial trom trough 32 the Water troni pipes 38 is sprayed upon the mixture. 'The amount ot water supplied, to the mixture can he readily cmitrolled hy a valve 3). derstood that the arms l i serve to keep the sand. constantlyY agitated and prevent the on+- let of hopper l from e ogging. Moreover these arms insure a continuous toed ot the sand to the trougl'i 5.

.lt will he seen that this machine is very simple and compact in construction and constitutes an ellicient mums tor thoroughlyr mixing cement.

What is claimed is:

'ihe combination with a mixingtrough `having an outlet, spraying means supported aho've the outlet, and a worm revolublo in It is to he un- From this hopper the trough, said Worm having reversely disposed paddles; of e main hopper opening into the trough, supply hoppers supported above and at opposite sides oi the main hop- `per, a trough below and dis osed'to receive material from each supply iopper, each of said troughs extending over and opening into the main hopper, a worm revoluble in each of `seid troughs, agitating means in one of said hoppers, and driving mechanism for the 1o Worms, v

f In testimony that I Claim the foregoingr as my own, I have hereto eiiixed my signature in the presence of two Witnesses.

GEORGE M. FENCE. vWitnesses:

A. L. GERBER, ELVA PARKS. 

